package com.atguigu.com.gulimallouth.controller;

import java.util.Arrays;
import java.util.HashMap;

public class test {
    public static void main(String[] args) {
        String i[] = {"1","2","3","2"};
        Arrays.stream(i).distinct().forEach(System.out::println);
        HashMap<Object, Object> map = new HashMap<>();
    }
}
